An experimental investigation on wettability effects of nanoparticles in pool boiling of a nanofluid

Quan, Xiaojun; Wang, Dongmin; Cheng, Ping

doi:10.1016/j.ijheatmasstransfer.2016.11.098

Cited by 66 publications

(17 citation statements)

References 39 publications

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“…Distribution of particles depends on their hydrophilicity [16]. Initially, strongly hydrophobic nanoparticles are distributed uniformly in the droplet and evaporation takes place mostly at the vapour-liquid boundary.…”

Section: Deposition Of Nanoparticlesmentioning

confidence: 99%

“…Most of the research on nanofluids focused on the heat transfer, pressure drop, and energy analysis [1,2,[7][8][9][10][11][12][13][14][15]. These main performance parameters depend on broadly researched fundamental properties like thermal conductivity, viscosity, density, and specific heat capacity [3,[16][17][18][19][20][21][22][23]. Most recently, Estellé et al [24] reviewed studies on surface tension and wetting behaviour of nanofluids which are key parameters for understanding heat transfer during boiling.…”

Section: Introductionmentioning

confidence: 99%

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Influence of graphene oxide nanofluids and surfactant on thermal behaviour of the thermosyphon

Wlaźlak

Zajączkowski

Woluntarski

et al. 2018

J Therm Anal Calorim

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The paper presents a thermal performance analysis of a thermosyphon filled with graphene oxide nanofluid. It focuses on factors influencing thermal resistance and geyser boiling processes, such as the presence of surfactant (here: sodium dodecyl sulphate), the time-related deterioration of nanoparticles, and working conditions. Results indicate that GO nanofluids improved heat transfer at low heat loads and that enhancements were limited to the evaporator section. Although thermal resistance of the device was similar for all tested working fluids at high evaporator temperatures, the timedependent behaviour was different. Both water and GO nanofluid facilitated geyser boiling. Sodium dodecyl sulphate inhibited the phenomenon for pure water, but the same concentration of surfactant in the graphene oxide nanofluid did not show the same effect. SEM analysis showed that substantial amount of surfactant attached to the surface of graphene oxide flakes, which explains the previously described behaviour.

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Section: Deposition Of Nanoparticlesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of graphene oxide nanofluids and surfactant on thermal behaviour of the thermosyphon

Wlaźlak

Zajączkowski

Woluntarski

et al. 2018

J Therm Anal Calorim

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“…With the potential of sustaining DWC using nanostructuring, researchers have been focusing more on understanding and implementing nanostructures in the past few years [149][150][151]. Park et al [152] investigated slippery asymmetric bumps for condensation.…”

Section: Graphene Carbon Nanotubes (Cnt) and Nanostructured Surfacesmentioning

confidence: 99%

Review of Micro–Nanoscale Surface Coatings Application for Sustaining Dropwise Condensation

et al. 2019

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Condensation occurs in most of the heat transfer processes, ranging from cooling of electronics to heat rejection in power plants. Therefore, any improvement in condensation processes will be reflected in the minimization of global energy consumption, reduction in environmental burdens, and development of sustainable systems. The overall heat transfer coefficient of dropwise condensation (DWC) is higher by several times compared to filmwise condensation (FWC), which is the normal mode in industrial condensers. Thus, it is of utmost importance to obtain sustained DWC for better performance. Stability of DWC depends on surface hydrophobicity, surface free energy, condensate liquid surface tension, contact angle hysteresis, and droplet removal. The required properties for DWC may be achieved by micro–nanoscale surface modification. In this survey, micro–nanoscale coatings such as noble metals, ion implantation, rare earth oxides, lubricant-infused surfaces, polymers, nanostructured surfaces, carbon nanotubes, graphene, and porous coatings have been reviewed and discussed. The surface coating methods, applications, and enhancement potential have been compared with respect to the heat transfer ability, durability, and efficiency. Furthermore, limitations and prevailing challenges for condensation enhancement applications have been consolidated to provide future research guidelines.

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“…EPD have a high level of automation and control where charged particles are attracted by a conducting substrate using an external electric field. Nanoparticles are also used with other micro-nano coatings as a hybrid coating due to its properties of act as nucleation points for bubble generation and also increase an overall surface area [104][105][106]. Using this concept, nanoparticles can be used to increase bubble nucleation.…”

Section: Nanoparticle Coatings: Metals and Ceramicsmentioning

confidence: 99%

Micro-Nano Scale Surface Coating for Nucleate Boiling Heat Transfer: A Critical Review

2018

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Nucleate boiling is a phase change heat transfer process with a wide range of applications i.e., steam power plants, thermal desalination, heat pipes, domestic heating and cooling, refrigeration and air-conditioning, electronic cooling, cooling of turbo-machinery, waste heat recovery and much more. Due to its quite broad range of applications, any improvement in this area leads to significant economic, environmental and energy efficiency outcomes. This paper presents a comprehensive review and critical analysis on the recent developments in the area of micro-nano scale coating technologies, materials, and their applications for modification of surface geometry and chemistry, which play an important role in the enhancement of nucleate boiling heat transfer. In many industrial applications boiling is a surface phenomenon, which depends upon its variables such as surface area, thermal conductivity, wettability, porosity, and roughness. Compared to subtractive methods, the surface coating is more versatile in material selection, simple, quick, robust in implementation and is quite functional to apply to already installed systems. The present status of these techniques for boiling heat transfer enhancement, along with their future challenges, enhancement potentials, limitations, and their possible industrial implementation are also discussed in this paper.

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An experimental investigation on wettability effects of nanoparticles in pool boiling of a nanofluid

Cited by 66 publications

References 39 publications

Influence of graphene oxide nanofluids and surfactant on thermal behaviour of the thermosyphon

Influence of graphene oxide nanofluids and surfactant on thermal behaviour of the thermosyphon

Review of Micro–Nanoscale Surface Coatings Application for Sustaining Dropwise Condensation

Micro-Nano Scale Surface Coating for Nucleate Boiling Heat Transfer: A Critical Review

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